The participant has tentatively accepted the appointment. This could be
automatically created by a system and requires further processing before it
can be accepted. There is no commitment that attendance will occur.
Returns the enum constant of this type with the specified name.
The string must match exactly an identifier used to declare an
enum constant in this type. (Extraneous whitespace characters are
not permitted.)
Parameters:
name - the name of the enum constant to be returned.